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Pulitzer's Longbill Macrosphenus pulitzeri

IUCN Red List Criteria

Critically Endangered  
Endangered C2a(i,ii) 
Vulnerable C2a(ii) 

IUCN Red List history

Year Category
2013 Endangered
2012 Endangered
2008 Endangered
2004 Endangered
2000 Endangered
1996 Endangered
1994 Endangered
1988 Threatened

Species attributes

Migratory status not a migrant Forest dependency High
Land mass type continent
Average mass -

Distribution

  Estimate Data quality
Extent of Occurrence breeding/resident (km2) 1,400 medium
Number of locations -
Fragmentation -

Population & trend

  Estimate Data quality Derivation Year of estimate
No. of mature individuals 1000-2499 poor Estimated 2013
Population trend Decreasing poor -
Number of subpopulations 1 - - -
Largest subpopulation 1000-2499 - - -
Generation length (yrs) 3.6 - - -
Population justification: This species's population is thought to almost certainly exceed 1,000 mature individuals (Mills 2010), but is nevertheless thought to be very small, so it is placed in the band for 1,000-2,499 mature individuals, equivalent to c.1,500-3,800 individuals in total. Its distribution is described as continuous along the Angolan Scarp (Mills 2010), so it is presumed to form one subpopulation; however, improved knowledge may change this.
Trend justification: It is said that this species's habitat is being cleared very rapidly (M. Mills in litt. 2013, F. Olmos in litt. 2013); however, it occupies modified habitats and until widespread quantitative data are available the population is suspected to be in decline at a moderate rate, owing to the continued clearance and burning of its habitats for subsistence agriculture.

Country/Territory distribution

Country/Territory Occurrence status Presence Breeding Non-breeding Passage Resident
Angola Native Extant       Yes

Important Bird Areas where this species has triggered the IBA criteria

Country/Territory IBA Name IBA link
Angola Chongoroi site factsheet

Habitats & altitude

Habitat (level 1) Habitat (level 2) Importance Occurrence
Forest Subtropical/Tropical Dry major resident
Altitude 800 - 1030 m Occasional altitudinal limits  

Threats & impact

Threat (level 1) Threat (level 2) Impact and Stresses
Agriculture & aquaculture Annual & perennial non-timber crops / Small-holder farming Timing Scope Severity Impact
Ongoing Majority (50-90%) Slow, Significant Decline Medium Impact: 6
Stresses
Ecosystem degradation, Ecosystem conversion
Natural system modifications Fire & fire suppression / Trend Unknown/Unrecorded Timing Scope Severity Impact
Ongoing Majority (50-90%) Slow, Significant Decline Medium Impact: 6
Stresses
Ecosystem degradation, Ecosystem conversion

Recommended citation
BirdLife International (2014) Species factsheet: Macrosphenus pulitzeri. Downloaded from http://www.birdlife.org on 16/09/2014. Recommended citation for factsheets for more than one species: BirdLife International (2014) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 16/09/2014.

This information is based upon, and updates, the information published in BirdLife International (2000) Threatened birds of the world. Barcelona and Cambridge, UK: Lynx Edicions and BirdLife International, BirdLife International (2004) Threatened birds of the world 2004 CD-ROM and BirdLife International (2008) Threatened birds of the world 2008 CD-ROM. These sources provide the information for species accounts for the birds on the IUCN Red List.

To provide new information to update this factsheet or to correct any errors, please email BirdLife

To contribute to discussions on the evaluation of the IUCN Red List status of Globally Threatened Birds, please visit BirdLife's Globally Threatened Bird Forums.

Key facts
Current IUCN Red List category Endangered
Family Sylviidae (Old World warblers)
Species name author Boulton, 1931
Population size 1000-2499 mature individuals
Population trend Decreasing
Distribution size (breeding/resident) 1,400 km2
Country endemic? Yes
Links to further information
- Summary information on this species